These are a low-calorie, low-carb, but very tasty, light alternative to a tuna wrap sandwich! Try to choose larger leaves of lettuce with no tears or holes; lettuce leaves are replacing the tortilla in a traditional wrap sandwich. Cheese is optional, but even a little adds a lot of flavor.
Combine tuna, mayonnaise, onion, salt, and pepper in a bowl.
Lay lettuce leaves out. Divide tuna mixture among the leaves, placing it in the middle of each leaf. Sprinkle Cheddar cheese over the tuna. Roll leaves up to create wraps.
Per Serving: 95 calories; protein 15.8g; carbohydrates 1.4g; fat 2.5g; cholesterol 19.7mg; sodium 148.1mg.